| 摘要 |
Constant-torgue spring means for exerting constant torgue on said rotor to cause the same to rotate in a predetermined direction; Rotation velocity of turntable is constant; Turntable has simple construction and certain movement; a phonograph for toy used to the constant-torque spring, meter device, damping device; Turntable is moved by spring; Pickup of record plate-circumference direction become to give the force; and record platevoice is regenerated by re-engage its tone stylus and the center direction-performance of pickup.
|
